Copyleaks is a content authenticity platform that checks whether text was written by AI and whether it copies existing sources.
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AI tools for plagiarism detection
25 tools that do plagiarism detection · best fit first, then monthly traffic · part of 3,707 live tools
Developers get API access for building AI detection into their own apps
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Phrasly is an AI writing workspace built around a humanizer that rewrites machine-generated text so it reads like natural human writing, without watermarks.
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Winston AI is an AI content detector and plagiarism checker built for education, SEO, and writing.
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Smodin is an AI writing toolkit that puts an AI content detector, an AI humanizer, a plagiarism checker, an AI writer, a rewriter and an AI chat assistant in one account.
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AHelp starts at $4
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StudyPro gives you 500 free credits daily
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Scribbr Plagiarism Checker compares a document with a database of 99 billion web pages and 8 million publications and shows where the text matches existing sources.
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Turnitin is an academic integrity suite that schools, universities, and research organizations use to verify originality and deal with AI-written text.
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Writing confidence that follows you everywhere
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Rephrase until it sounds right
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ZeroGPT processes text quickly to detect AI-generated content
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Used by over 10 million teachers and students across more than 100 countries, GPTZero detects AI-generated text across major language models while providing a suite of writing verification tools
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ProWritingAid is a writing toolkit built around the full path of a book, from first idea to publication.
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Trinka is an AI writing assistant and grammar checker aimed at academic and technical writing.
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Rewriting existing content without losing its original meaning drives the core function of this AI-powered paraphrasing tool
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Yomu AI is an academic writing assistant that drafts, edits and cites essays, research papers, literature reviews and theses inside one document editor.
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WriterZen costs nothing for 15 days
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UnGPT takes AI-generated text and rewrites it to mimic natural human writing patterns that slip past detection algorithms
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Pangram Labs makes an AI detector that checks whether text was written by a person or generated by a language model.
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ZeroGPT Plus can detect if text came from AI with high accuracy
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Dechecker AI breaks down AI detection differently
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The free plan hands you 5,000 characters per check
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A graduate student stares at a blank document at 2 AM, three days before her thesis chapter is due
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